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Willie Wong's user avatar
Willie Wong's user avatar
Willie Wong's user avatar
Willie Wong
  • Member for 14 years, 5 months
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About

A mathematician specializing in nonlinear hyperbolic PDEs, geometric analysis of pseudo-Riemannian manifolds, and general relativity.

A few of my questions on MO have not yet received a complete answer. Some of them I think about in the course of my research. But this one is entirely orthogonal to my main research activity and I would love to know the answer!

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Top posts
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155
Does there exist a bijection of $\mathbb{R}^n$ to itself such that the forward map is connected but the inverse is not?
Apr 11, 2016
104
Math and Wormholes
Apr 19, 2011
84
Examples of theorems misapplied to non-mathematical contexts
Apr 12, 2011
82
Tools for long-distance collaboration
Dec 14, 2010
74
Should I not cite an arxiv.org paper which otherwise seems to be unpublished?
Oct 5, 2010
45
Questions on J. F. Nash's answer about his errors in the proof of embedding theorem
Jun 13, 2016
38
Did Euler prove theorems by example?
Jun 16, 2016
36
When can a connection Induce a Riemannian metric for which it is the Levi-Civita connection?
Feb 5, 2011
35
Examples of eventual counterexamples
Apr 21, 2011
34
Jet bundles and partial differential operators
Sep 28, 2011
Top Meta posts
7
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62
Is there a software solution if we do cut the cord from SE?
37
Is it okay to put on your profile that you're looking for a job?
34
Revamping the closure reasons
21
Should Theoretical Computer Science SE and mathoverflow be merged?
17
Which Latex / MathJax features do we need or want to have supported on the site?
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618
Is there a bijection of $\mathbb{R}^n$ with itself such that the forward map is connected but the inverse is not?
271
Open problems in General Relativity
170
What's the best way to write e-mail addresses?
142
Mathematical precise definition of a PDE being elliptic, parabolic or hyperbolic
104
Citing a range of papers using numeric keys as in \cite{a, b, c} -> [1-3]